This has been used in a MySQL setup, where there is 1 server and multiple slaves. The server owns the Virtual
IP (VIP).
If the master fails, then the VIP should be removed from the master server (ifconfig down), and added to an
alternative slave server instead.

Clients should be configured to point to the VIP instead of directly to a server.

4. script

The 'script' command can be used to log stdin/stdout to disk. By default it creates a file called 'typescript'
where both stdin and stdout will be logged. I've found this useful when installing or configuring programs and
need to review or keep a history of the settings chosen. I also keep a backup of this log in case there were any
missed warnings or errors.